Snatch-block.



E. GHRISTENSEN.

SNATGH BLOCK.

APPLIoATIoN FILED APR. a, 1911.

1,010,018, Patented N0v.28,191'1.

MLM 5W (M 477-054/ ns I EMIL CHRISTENSEN, OF PGRTLAND, OREGON.

. SNATCI-I-BLOCK.

Speccation of Letters Patent.

Application led April 8, 1911.

Patented Nov. 28, 1911. Serial No. 619,786.

To all 'whom it may concern:

Be it known that I, EMIL CHRISTENSEN, of Portland, Multnomah county,Oregon, have invented certain new and useful Improvements inSnatch-Blocks, of which the following is a specification.

The object of my invention is to provide a cable block from which thecable can be easily and quickly removed.

The invention consists in details of con struction of the block ashereinafter described and pointed out in the claims.

In the accompanying drawings forming part of this specification, Figure1 is an edge View of the block embodying my invention, Fig. 2 is avertical sectional view of the same, Fig. 3 is a view partially insection illustrating the eccentric pivot pin on which the locking leverand the locking link are mounted.

In the drawing 2 represents the main body or frame of the block, 3 is afollower, 4 a sheave having a hub or pin 5 and a bushing 6. rIhe frame 2is provided with a slot or opening between its upper portion and thefollower 3 through which opening a cable can be placed upon the sheaveor removed therefrom. This opening is normally closed by the lockingdevice which I will hereinafter describe in detail.

7 is an oil reservoir connecting with ports leading to the bushing.

6 is a sleeve or separator and 9 a bolt passing therethrough andsecuring the body 2 and the follower 3 together.

l0 is a locking link loosely mounted on an eccentric pin 11 which hasbearings in bushings 12 mounted in brackets 13. This locking link has aslot therein to receive the end of a lug 14 and the link at one end ofsaid slot has preferably a rounded surface 15 to enter a depression 16in the upper edge of said lug. A projection 17 is carried by the saidlocking link and provided with a concave face 18 which overhangs theface of the sheave and forms a guide for the cable thereon.

A locking lever 19 is mounted in the eccentric pin 11 and is adapted tofit within a curved guard or flange 20 when it is in its lockingposition and thereby is protected by said flange as shown in Figs. 2 and3. When however, the locking lever is swung to an upright position asindicated by the dotted lines in Fig. 2, the locking link will be raisedsufliciently to clear the outer end of the lug 15 and thereupon the saidlink can be swung outwardly to expose the opening leading to the sheaveand permitting the placing of the cable on the sheave or its removaltherefrom. When the locking lever is swung down to its positionl withinthe guarded flange, the eccentric pin will draw down on the locking linkand seat it in the depression in the lug 11 and thereupon the said linkwill be locked and the cable cannot be accidentally disengaged from thesheave. The eccentric surface on the pin is so arrange-d that thelocking lever will swing past the center in moving to its lockingposition and there .will be therefore no tendency on the part of thislever to swing to its releasing position until it is tripped by theoperator.

I do not wish to be confined in this case to the details of constructionherein shown as many of them are capable of various modificationswithout departing from the spirit of my invention.

I claim as my invention:

1. A snatch block comprising a frame, a sheave journaled therein, saidframe having a slot or opening to allow the cable to be placed on saidsheave, a link bridging said opening, a lug having a depression toreceive one end of said link and means for moving said link lengthwiseto lock it in said depression.

2. A snatch block comprising a frame having a slotted side wall, asheave journaled in said frame, an eccentrically pivoted locking linkarranged to bridge said slot and a locking lever.

3. A snatch block comprising a frame having a slotted side wall, asheave journaled in said frame, a locking link bridging said slot, a pinwhereon said link is eccentrically mounted, a lug in the path of thesaid link and means for rotating said pin to move said link into or outof contact with said lug.

1. A snatch block comprising a frame having an opening in its side wall,a sheave mounted in said frame, a link arranged to bridge said opening,an eccentric pin whereon said link is loosely mounted, a lug in the pathof said link, said pin being capable of partial rotation to move saidlink lengthwise to its locking or releasing position, and an operatinglever carried by said pin.

5. A snatch block comprising a frame having an opening in its side wall,a sheave journaled in said frame, and an ecoentri- In Witness whereof, Ihave hereunto set cally mounted means for closing said slot. my handthis 22nd day of March 1911.

6. A snatch block comprising a frame EMIL CHRISTENSEN having an openingin its side Wall, a sheave 5 journaled in said frame, an eocentlioallyWitnesses:

mounted means for closing said slot, and H. V. CARPENTER, means forlocking said closing means. PETER SKORBERG.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents. Washington, D. C.

